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21st August - NTT DoCoMo, Inc. and its eight regional
subsidiaries announced today that they would separately
manage call and data packet transmission congestion
over the 3G FOMA™ network to prevent voice traffic
congestion control from affecting packet communication
traffic and vice versa.
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Currently, excessive congestion in either voice or data transmissions
can force DoCoMo to limit network usage for both voice and
data in order to prevent network breakdown.
One result of the move is the increased ability to successfully
transmit text messages via i-mode mail, or to DoCoMo's i-mode™
Disaster Message Board service, even if voice traffic should
rise sharply during a major disaster. The i-mode Disaster
Message Board service, launched on January 17, 2004, enables
i-mode subscribers to post text messages on a special i-mode
site.
The new system will initially apply only to selected handsets
— D902iS, F902iS, N902iS, P902iS, SH902iS, DOLCE SL,
SH702iS, D702iF, N702iS, P702iD, and N902iX HIGH-SPEED.
A similar control system for the 2G mova™ network was
implemented in April 2004.
About NTT DoCoMo
NTT DoCoMo is the world's leading mobile communications company.
DoCoMo serves more than 51 million customers, of which more
than half subscribe to FOMA™, launched as the world's
first 3G mobile service based on W-CDMA in 2001. DoCoMo also
offers a wide variety of leading-edge mobile multimedia services,
including i-mode™, the world's most popular mobile e-mail/Internet
service, used by more than 46 million people. With the addition
of credit-card and other e-wallet functions, DoCoMo mobile
phones have become highly versatile tools for daily life.
NTT DoCoMo is listed on the Tokyo (9437), London (NDCM) and
New York (DCM) stock exchanges.
For more information, visit: www.nttdocomo.com.
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